When you behead a word, you remove the first letter and still have a valid word. You will be given clues for the two words, longer word first.
Example: Begin -> Sour, acidic
Answer: The words are Start and Tart.

1. Pleasant -> Frozen water
2. More recent -> Pitcher for water
3. Noble gas -> Indefinitely long period of time
4. Almost -> Ahead of time; at the beginning of a period of time
5. Not at any time -> At any time
6. None of two choices -> One of two choices
7. Limited width or scope -> Projectile shot from a bow
8. One, for example -> Brown, earthy colour

I also knew ewer from doing crossword puzzles. I've become addicted to them lately and have thought I should stop spending my time that way--but now I see that I am learning something. I couldn't think of #4, though. Good quiz!